I had to replace the original battery today on my 2017 EX. I could tell the past few days it was getting weak when I would start the engine. I found a Duracell group 48(H6) on sale at Sams Club for $95. A visit to You Tube gave some good video of how to remove the plastic front engine shroud along with the air intake ductwork necessary to get to the battery. Be careful not to drop those plastic screws when removing and replacing them. Pretty easy job. Battery was 51 months old, so, not too bad on its life.